Add .gitattributes file

.svg files were not treated as binary which means they were spamming up
the diff log.

Bash files were not being pulled with LF line endings, which means they
couldn't be run by Windows Subsystem for Linux.

Bash files were renamed .sh to easily allow them to be recognized by
both .gitattributes and humans.

Taken from https://github.com/alexkaratarakis/gitattributes.

.gitattributes

@@ -0,0 +1,95 @@
+# Common settings that generally should always be used with your language specific settings
+
+# Auto detect text files and perform LF normalization
+# http://davidlaing.com/2012/09/19/customise-your-gitattributes-to-become-a-git-ninja/
+* text=auto
+
+#
+# The above will handle all files NOT found below
+#
+
+# Documents
+*.doc	 diff=astextplain
+*.DOC	 diff=astextplain
+*.docx diff=astextplain
+*.DOCX diff=astextplain
+*.dot  diff=astextplain
+*.DOT  diff=astextplain
+*.pdf  diff=astextplain
+*.PDF	 diff=astextplain
+*.rtf	 diff=astextplain
+*.RTF	 diff=astextplain
+*.md text
+*.tex text
+*.adoc text
+*.textile text
+*.mustache text
+*.csv text
+*.tab text
+*.tsv text
+*.sql text
+
+# Graphics
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.tif binary
+*.tiff binary
+*.ico binary
+# SVG treated as an asset (binary) by default. If you want to treat it as text,
+# comment-out the following line and uncomment the line after.
+*.svg binary
+#*.svg text
+*.eps binary
+
+#
+# Exclude files from exporting
+#
+
+.gitattributes export-ignore
+.gitignore export-ignore
+
+#sources
+*.c text diff=cpp
+*.cc text diff=cpp
+*.cxx text diff=cpp
+*.cpp text diff=cpp
+*.c++ text diff=cpp
+*.hpp text diff=cpp
+*.h text diff=cpp
+*.h++ text diff=cpp
+*.hh text diff=cpp
+
+# Compiled Object files
+*.slo binary
+*.lo binary
+*.o binary
+*.obj binary
+
+# Precompiled Headers
+*.gch binary
+*.pch binary
+
+# Compiled Dynamic libraries
+*.so binary
+*.dylib binary
+*.dll binary
+
+# Compiled Static libraries
+*.lai binary
+*.la binary
+*.a binary
+*.lib binary
+
+# Executables
+*.exe binary
+*.out binary
+*.app binary
+
+#Qt Specific
+*.qml text
+
+#Linux Shell Scripts
+#Windows Subsystem for Linux will not run CLRF files.
+*.sh text eof=lf